1 /* 2 * Target-specific parts of the CPU object 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "cpu.h" 22 #include "accel/accel-cpu-ops.h" 23 #include "system/cpus.h" 24 #include "exec/cpu-common.h" 25 #include "exec/replay-core.h" 26 #include "exec/log.h" 27 #include "hw/core/cpu.h" 28 #include "trace/trace-root.h" 29 30 /* Validate correct placement of CPUArchState. */ 31 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0); 32 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState)); 33 34 /* enable or disable single step mode. EXCP_DEBUG is returned by the 35 CPU loop after each instruction */ 36 void cpu_single_step(CPUState *cpu, int enabled) 37 { 38 if (cpu->singlestep_enabled != enabled) { 39 cpu->singlestep_enabled = enabled; 40 41 #if !defined(CONFIG_USER_ONLY) 42 const AccelOpsClass *ops = cpus_get_accel(); 43 if (ops->update_guest_debug) { 44 ops->update_guest_debug(cpu); 45 } 46 #endif 47 48 trace_breakpoint_singlestep(cpu->cpu_index, enabled); 49 } 50 } 51 52 void cpu_abort(CPUState *cpu, const char *fmt, ...) 53 { 54 va_list ap; 55 va_list ap2; 56 57 va_start(ap, fmt); 58 va_copy(ap2, ap); 59 fprintf(stderr, "qemu: fatal: "); 60 vfprintf(stderr, fmt, ap); 61 fprintf(stderr, "\n"); 62 cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); 63 if (qemu_log_separate()) { 64 FILE *logfile = qemu_log_trylock(); 65 if (logfile) { 66 fprintf(logfile, "qemu: fatal: "); 67 vfprintf(logfile, fmt, ap2); 68 fprintf(logfile, "\n"); 69 cpu_dump_state(cpu, logfile, CPU_DUMP_FPU | CPU_DUMP_CCOP); 70 qemu_log_unlock(logfile); 71 } 72 } 73 va_end(ap2); 74 va_end(ap); 75 replay_finish(); 76 #if defined(CONFIG_USER_ONLY) 77 { 78 struct sigaction act; 79 sigfillset(&act.sa_mask); 80 act.sa_handler = SIG_DFL; 81 act.sa_flags = 0; 82 sigaction(SIGABRT, &act, NULL); 83 } 84 #endif 85 abort(); 86 } 87